Turn on the first for one min and then turn it off. * j4 R7 q1 v3 ~& }! PTurn on the 2nd for five min and then turn it off.- X$ A) g h5 _( H9 i/ l( W
Turn on the 3rd and leave it on. $ D9 W) {& ?% O2 wAnd then go upstairs right away. % t7 T( U/ ~ l; j" b5 R+ l8 U- p% j) y% R" ~% w: V$ k( w9 o; @- j+ C
Find the answer by using your fingers and eyes+ g4 U2 t1 d5 Y& [
这只是一个智力问题,不象是电工问题。
原帖由 老警察 于 2009-1-16 07:12 发表 : W l+ Q6 m3 H1 g- g
Turn on the first for one min and then turn it off.* S2 N* T5 t% [5 j# O: S
Turn on the 2nd for five min and then turn it off.% d( C" B$ Z. U
Turn on the 3rd and leave it on. + y7 E4 g, T" x( R5 _% P2 BAnd then go upstairs right away. + o2 u, k. m7 q / r1 I( x: [4 e# T/ b/ pFind the answer by using ...